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Here is a comparison of the 4 species of Lophophora as well as an additional "CV", Lophohpora jourdaniana.
L. diffusa
L. fricii
L. jourdaniana
L. koehresii
L. williamsii
Growth Habit
Clumpig: multiple offshoots
Singular:Usually only one stem
Rib Pattern
Wavy: Ribs have an uneven pattern
Straight: Ribs follow a line
Spiral: Ribs twist
Areole Distance
The verticle distance between 2 areoles on the same rib; in millimeters (mm).
Areole Appearance
Areole size
The diameter of an areole not including spines or wool; in millimeters (mm).
Skin Colour
Plant's Texture
Squishy: dents in a little with light pressure.
Firm: Does not easily indent with pressure.
Flower Colour
The colour of the flower petals.
Days Flower Stays open
Number of Petals
Petal Length & Width
Lengnth of the petal from base to tip in millimeters (mm).
Petal Shape
Pointed: The tip of the petal is pointed.
Rounded: The tip of the petal is more rounded.
Number of Filaments
The minimum, average & maximum (#/#/#) number of filaments per flower.
Filament Colour
Filament Length & Width
Anther Length & Width
Pollen Grains per Anther
Pollen Length & Width
Style Length & Width
Stigma Width (above)
# of Stigma Lobes
Stigma Lobe Length
Reproduction
Days to Fruit Maturity
Fruit Colour
Fruit Appearance
Fruit Length & Width
Seeds Per Fruit
Seed Length and Width
Hilum Appearance
Testa Texture